
header{position: absolute;top:50px;left:100px;right:100px;height:32px}
header .logo,header .title{float:left}
header .login{float: right;}
header .logo{/* margin-right:4rem; */width: 23rem;height: 3rem;}
header .title{overflow: hidden;}
header .title li{float:left;margin:0 2.2rem}
header .title li > a{line-height: 3.2rem;color: #fff;font-size: 1.6rem;opacity: 0.8;}
header .title li > .active {opacity: 1;font-weight: bold;padding-bottom:8px;border-bottom: 2px solid white;} 
header .login a{color: #fff;font-size: 1.6rem;opacity: 0.8;padding:0px 5px 0 0}
header .login a:hover{color: #fff;font-size: 1.6rem;opacity: 1;}